CLEAPSS DT - Supporting practical work in science, technology and art

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Thermoplastic sheet is heated along a straight line so that it can be folded through a controlled angle.The heat may be supplied by a silica-insulated mains element, one or more bare wires or by ceramic-insulated elements.Line bending heaters with heated tensioned resistance wire have the wire supplied with a current through a separated extra-low voltage (SELV) source.
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